eliminate old file stream cache, just use simplified cache for linting filesystem changes; otherwise switch everything to artifact cache

src/file_stream/file_stream.h

@@ -5,38 +5,17 @@
 #define FILE_STREAM_H
 
 ////////////////////////////////
-//~ rjf: Per-Path Info Cache Types
-
-typedef struct FS_RangeNode FS_RangeNode;
-struct FS_RangeNode
-{
-  FS_RangeNode *next;
-  C_ID id;
-  U64 working_count;
-};
-
-typedef struct FS_RangeSlot FS_RangeSlot;
-struct FS_RangeSlot
-{
-  FS_RangeNode *first;
-  FS_RangeNode *last;
-};
+//~ rjf: Path Cache
 
 typedef struct FS_Node FS_Node;
 struct FS_Node
 {
   FS_Node *next;
-  
-  // rjf: file metadata
+  FS_Node *prev;
   String8 path;
-  FileProperties props;
-  
-  // rjf: hash store root
-  C_Root root;
-  
-  // rjf: sub-table of per-requested-file-range info
-  U64 slots_count;
-  FS_RangeSlot *slots;
+  U64 gen;
+  U64 last_modified_timestamp;
+  U64 size;
 };
 
 typedef struct FS_Slot FS_Slot;
@@ -46,54 +25,17 @@ struct FS_Slot
   FS_Node *last;
 };
 
-typedef struct FS_Stripe FS_Stripe;
-struct FS_Stripe
-{
-  Arena *arena;
-  CondVar cv;
-  RWMutex rw_mutex;
-};
-
 ////////////////////////////////
 //~ rjf: Shared State Bundle
 
-typedef struct FS_Request FS_Request;
-struct FS_Request
-{
-  FS_Request *next;
-  C_Key key;
-  String8 path;
-  Rng1U64 range;
-};
-
-typedef struct FS_RequestNode FS_RequestNode;
-struct FS_RequestNode
-{
-  FS_RequestNode *next;
-  FS_Request v;
-};
-
 typedef struct FS_Shared FS_Shared;
 struct FS_Shared
 {
   Arena *arena;
   U64 change_gen;
-  
-  // rjf: path info cache
   U64 slots_count;
-  U64 stripes_count;
   FS_Slot *slots;
-  FS_Stripe *stripes;
-  
-  // rjf: requests
-  Mutex req_mutex;
-  Arena *req_arena;
-  FS_RequestNode *first_req;
-  FS_RequestNode *last_req;
-  U64 req_count;
-  
-  // rjf: request take counter
-  U64 lane_req_take_counter;
+  StripeArray stripes;
 };
 
 ////////////////////////////////
@@ -101,12 +43,6 @@ struct FS_Shared
 
 global FS_Shared *fs_shared = 0;
 
-////////////////////////////////
-//~ rjf: Basic Helpers
-
-internal U64 fs_little_hash_from_string(String8 string);
-internal U128 fs_big_hash_from_string_range(String8 string, Rng1U64 range);
-
 ////////////////////////////////
 //~ rjf: Top-Level API
 
@@ -118,16 +54,17 @@ internal void fs_init(void);
 internal U64 fs_change_gen(void);
 
 ////////////////////////////////
-//~ rjf: Cache Interaction
+//~ rjf: Artifact Cache Hooks / Accessing API
+
+internal C_Key fs_content_key_from_artifact_key(String8 key);
 
 internal AC_Artifact fs_artifact_create(String8 key, B32 *retry_out);
 internal void fs_artifact_destroy(AC_Artifact artifact);
 
-internal C_Key fs_key_from_path_range_new(String8 path, Rng1U64 range, U64 endt_us);
-#define fs_key_from_path(path, endt_us) fs_key_from_path_range_new((path), r1u64(0, max_U64), (endt_us))
-
 internal C_Key fs_key_from_path_range(String8 path, Rng1U64 range, U64 endt_us);
 internal U128 fs_hash_from_path_range(String8 path, Rng1U64 range, U64 endt_us);
+#define fs_key_from_path(path, endt_us) fs_key_from_path_range((path), r1u64(0, max_U64), (endt_us))
+#define fs_hash_from_path(path, endt_us) fs_hash_from_path_range((path), r1u64(0, max_U64), (endt_us))
 
 ////////////////////////////////
 //~ rjf: Asynchronous Tick